LS4 / F40 swap - fieroguru (Page 206/216) Trinten APR 06, 09:40 PM quote Originally posted by fieroguru: Most would think it is insane the $$$ spent chasing this valve cover obsession (cost of 3 new valve cover sets, billet adapters I didn't use, and the countless hours in each iteration, the current adapter plates, and the PVC/catch can baffles... all to satisfy my quest for a certain look and avoiding the hoses and clutter of catch cans. Thank you for the details and explanation. And if anyone can appreciate chasing an outcome to get exactly what you want regardless of the time/money/difficulty, it's me. The outcome is absolutely awesome man. fieroguru APR 13, 09:37 PM Only had 1 day this weekend to work on the Fiero. Things that are completed: Charge pipe from turbo to throttle body. Air temp sensor in charge pipe. Poly boost ref line from intake to fuel pressure regulator and line to the passenger compartment for the gauge. Poly boost ref line from compressor to mac valve. Loomed the rest of the engine side of the harness. Installed the mock up firewall with pass through. Pulled wires through pass through and started to separate them to where they go. fieroguru APR 15, 08:21 PM I think this is going to be the ecm layout in the center console area: fieroguru APR 16, 08:42 PM While I was playing in AutoCAD for the wiring, I went ahead and drew up some lifting eyes for the engine and transmission to help with getting it off the table and onto the legs of the cherry picker. I made the engine one first then adapted it to the transission one. Backroadgee APR 20, 11:46 AM WW2-esque" hot rod is freaking awesome. fieroguru APR 20, 06:18 PM It was another productive weekend: Installed and leveled the exhaust Fabricated a new bracket from the compressor to support the exhaust Fabricated a new bracket from the muffler to the new compressor bracket Fabricated the ECM panel and installed the ECM, A/C Relay, 2 circuit breakers. Route hose for PCV to passenger side exhaust - this is after the boost activated cutout and will work for clean air intake, and vent any crankcase pressure under boost. Fabricate the 1.5 DIN radio panel that will hold the Haltech 4x2 CAN buttons, OBD2 connector, 2 USB charging ports (in 1 housing), and 12V accessory socket. Sandblasted and powdercoated the new lift and ehaust brackets I am off this coming Thursday and Friday and want to have the drivetrain back in the fiero by the end of next weekend. pmbrunelle APR 22, 02:26 PM Can you elaborate more on your crankcase ventilation setup? Does the exhaust pipe work better than a road draft tube due to higher velocity? dskebo APR 22, 03:00 PM I ran a pcv setup like that and it sucked the oil out of the engine so fast I almost damaged it. fieroguru APR 22, 08:58 PM quote Originally posted by pmbrunelle: Can you elaborate more on your crankcase ventilation setup? Does the exhaust pipe work better than a road draft tube due to higher velocity? Generall consensus is the header/exhaust evac is more efficient than the road tube. Both valve covers have integraded self draining catch cans with baffles and stainless brillo material to remove the oil from the PCV vapors and to "filter" the clean air coming in. I use air quotes as this filtering process will not be ideal, which I am OK with. There are 5/8" hoses from each valve cover running to each exhaust tip. The driver side has one of these before the exhaust tip. This side of the ehaust is always flowing at idle, cruise, WOT, and under boost and the exhaust flow produces a slight vacuum to pull clean air through the engine and out the front valve cover. The passenger side has a boost activated (actually pre-turbo exhaust back pressure activated so it opens sooner) cutout. This means that at idle and cruise, the cutout is closed, so there is no exhaust flow through this tip. A simple threaded 90 will pull air from inside this tip at idle and cruise to route through the engine. When the engine is under boost, there will be positive crankcase pressure. Under this condition, both 5/8" hoses will flow dirty PCV vapors to both exhaust tips. Here is a picture of the layout. quote Originally posted by dskebo: I ran a pcv setup like that and it sucked the oil out of the engine so fast I almost damaged it. While your setup might have done this, I don't have any concerns. Will APR 23, 07:36 AM quote Originally posted by dskebo: I ran a pcv setup like that and it sucked the oil out of the engine so fast I almost damaged it. Sounds like you didn't have good (or any?) air/oil separation in your PCV system.